1. On September 6, 1781, the Battle of the Chesapeake took place off the coast of Virginia, which was a crucial naval battle in the American Revolutionary War. Delaware played a small but significant part in the battle, with several Delaware soldiers serving in the Continental Army and the Delaware River being used as an important transportation route for troops and supplies.

2. September 6, 1918 saw the first case of the Spanish flu reported in Delaware. The pandemic would go on to claim the lives of over 700 residents of the state, and impacted every aspect of life in Delaware for several years.

3. The University of Delaware was founded on September 6, 1743, making it one of the oldest institutions of higher education in the United States. Originally known as the Academy of Newark, the school has since grown into a premier research university with a worldwide reputation for excellence.

4. September 6, 1968 was a significant day in the civil rights movement in Delaware, as the city of Wilmington saw the largest civil rights demonstration in its history. Thousands of residents marched to protest the lack of job opportunities, public housing, and quality education available to African Americans in the city.

5. Delaware Governor Jack Markell signed the Delaware Health Information Network Privacy and Security Law into effect on September 6, 2010. This groundbreaking law was the first of its kind in the nation and established strict guidelines for the security and confidentiality of patients' electronic health records.